
// Licensed to the Apache Software Foundation (ASF) under one
// or more contributor license agreements.  See the NOTICE file
// distributed with this work for additional information
// regarding copyright ownership.  The ASF licenses this file
// to you under the Apache License, Version 2.0 (the
// "License"); you may not use this file except in compliance
// with the License.  You may obtain a copy of the License at
// 
//   http://www.apache.org/licenses/LICENSE-2.0
// 
// Unless required by applicable law or agreed to in writing,
// software distributed under the License is distributed on an
// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
// KIND, either express or implied.  See the License for the
// specific language governing permissions and limitations
// under the License.

/**
 * AUTO-GENERATED FILE. DO NOT MODIFY.
 */

// Licensed to the Apache Software Foundation (ASF) under one
// or more contributor license agreements.  See the NOTICE file
// distributed with this work for additional information
// regarding copyright ownership.  The ASF licenses this file
// to you under the Apache License, Version 2.0 (the
// "License"); you may not use this file except in compliance
// with the License.  You may obtain a copy of the License at
// 
//   http://www.apache.org/licenses/LICENSE-2.0
// 
// Unless required by applicable law or agreed to in writing,
// software distributed under the License is distributed on an
// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
// KIND, either express or implied.  See the License for the
// specific language governing permissions and limitations
// under the License.
import * as zrUtil from 'zrender/lib/core/util.js'; // FIXME 公用？

function dataStatistics(datas, statisticType) {
	var dataNameMap = {};
	zrUtil.each(datas, function (data) {
		data.each(data.mapDimension('value'), function (value, idx) {
			// Add prefix to avoid conflict with Object.prototype.
			var mapKey = 'ec-' + data.getName(idx);
			dataNameMap[mapKey] = dataNameMap[mapKey] || [];

			if (!isNaN(value)) {
				dataNameMap[mapKey].push(value);
			}
		});
	});
	return datas[0].map(datas[0].mapDimension('value'), function (value, idx) {
		var mapKey = 'ec-' + datas[0].getName(idx);
		var sum = 0;
		var min = Infinity;
		var max = -Infinity;
		var len = dataNameMap[mapKey].length;

		for (var i = 0; i < len; i++) {
			min = Math.min(min, dataNameMap[mapKey][i]);
			max = Math.max(max, dataNameMap[mapKey][i]);
			sum += dataNameMap[mapKey][i];
		}

		var result;

		if (statisticType === 'min') {
			result = min;
		} else if (statisticType === 'max') {
			result = max;
		} else if (statisticType === 'average') {
			result = sum / len;
		} else {
			result = sum;
		}

		return len === 0 ? NaN : result;
	});
}

export default function mapDataStatistic(ecModel) {
	var seriesGroups = {};
	ecModel.eachSeriesByType('map', function (seriesModel) {
		var hostGeoModel = seriesModel.getHostGeoModel();
		var key = hostGeoModel ? 'o' + hostGeoModel.id : 'i' + seriesModel.getMapType();
		(seriesGroups[key] = seriesGroups[key] || []).push(seriesModel);
	});
	zrUtil.each(seriesGroups, function (seriesList, key) {
		var data = dataStatistics(zrUtil.map(seriesList, function (seriesModel) {
			return seriesModel.getData();
		}), seriesList[0].get('mapValueCalculation'));

		for (var i = 0; i < seriesList.length; i++) {
			seriesList[i].originalData = seriesList[i].getData();
		} // FIXME Put where?

		for (var i = 0; i < seriesList.length; i++) {
			seriesList[i].seriesGroup = seriesList;
			seriesList[i].needsDrawMap = i === 0 && !seriesList[i].getHostGeoModel();
			seriesList[i].setData(data.cloneShallow());
			seriesList[i].mainSeries = seriesList[0];
		}
	});
}